Image Compressor
Reduce the file size of an image (JPG/PNG/WebP) in your browser, without a noticeable loss of quality.
The image compressor is a free browser tool for shrinking the file size of an image without losing too much quality. Upload an image (JPG or PNG), choose a quality level, and get a compressed version to download. All processing happens in your browser, the image is never uploaded to any server. It suits fast image uploads to a website, reducing file weight for email, and saving storage space. Last updated: May 2026.
How to use this tool
- 01Choose an imageClick "Choose image" and select a JPG or PNG file from your device.
- 02Adjust qualityMove the slider to choose a quality level. Lower quality = a smaller file.
- 03Compare the resultSee the original and the compressed version side by side, including the new file size.
- 04DownloadClick "Download image" to save the compressed version to your device.
When is this useful?
- Fast upload to a websiteLighter images load faster, improving the user experience and your ranking on Google.
- Sending by emailShrink heavy images so you do not exceed the size limit for email attachments.
- Saving storageCompressed images take up less space on disk, in the cloud, or on your phone.
- Social mediaPrepare images at a suitable weight for fast uploads to social networks.
Examples
- Product photo for a storeA 4 MB image drops to 400 KB at 70% quality, good enough for display on a website.
- ScreenshotA heavy screenshot drops significantly in size without losing readability.
- Background imageA large background image is compressed so it does not slow down page loading.
Tips for a better result
- Start at 70% qualityA quality level of 70% usually gives a good balance between weight and quality. Go lower only if you need to.
- PNG vs JPGJPG suits photos, PNG suits graphics with text or transparency. The tool keeps the original format.
- Your data stays with youThe image is processed in your browser only and is not uploaded. Refreshing the page resets everything.
How image compression works
Image compression reduces the file weight by cutting down the amount of data in the image. In "lossy" compression (like JPG), some details that the eye barely notices are removed, which significantly reduces the weight. The tool lets you control the compression level through the quality slider.
Which quality level to choose
For most uses, a quality of 60%-80% gives an excellent result with significant weight savings. For images that need to look perfect (for example a photographer's portfolio), keep the quality high. For everyday website images, you can go lower.
Privacy
All image processing happens in your browser. The image is not uploaded, not stored, and not sent to analytics. That is why the tool works even when you are offline.
Frequently asked questions
Is the image quality affected?
Lossy compression removes details the eye barely notices. At 70% quality and above, the difference is usually not noticeable.
Which formats are supported?
The tool supports JPG and PNG. The original format is kept in the compressed file.
Is there a size limit?
The tool processes images in the browser, so the limit depends on your device's memory. Reasonable images (up to a few tens of MB) will work without trouble.
Is my data saved?
No. All processing happens in your browser. The image is not uploaded and not stored.
Is the tool free?
Yes. The tool is completely free, with no signup and no limit.